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Commitfd34374

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Add many new Asserts in code and fix simple bug that slipped through
without them, related to previous commit. Report by Bruce Momjian.
1 parent88fba70 commitfd34374

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3 files changed

+25
-8
lines changed

3 files changed

+25
-8
lines changed

‎src/backend/access/transam/xlog.c‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.410 2010/05/1311:15:38 sriggs Exp $
10+
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.411 2010/05/14 07:11:48 sriggs Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -6009,6 +6009,7 @@ StartupXLOG(void)
60096009
running.oldestRunningXid=oldestActiveXID;
60106010
latestCompletedXid=checkPoint.nextXid;
60116011
TransactionIdRetreat(latestCompletedXid);
6012+
Assert(TransactionIdIsNormal(latestCompletedXid));
60126013
running.latestCompletedXid=latestCompletedXid;
60136014
running.xids=xids;
60146015

@@ -7825,6 +7826,7 @@ xlog_redo(XLogRecPtr lsn, XLogRecord *record)
78257826
running.oldestRunningXid=oldestActiveXID;
78267827
latestCompletedXid=checkPoint.nextXid;
78277828
TransactionIdRetreat(latestCompletedXid);
7829+
Assert(TransactionIdIsNormal(latestCompletedXid));
78287830
running.latestCompletedXid=latestCompletedXid;
78297831
running.xids=xids;
78307832

‎src/backend/storage/ipc/procarray.c‎

Lines changed: 13 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -37,7 +37,7 @@
3737
*
3838
*
3939
* IDENTIFICATION
40-
* $PostgreSQL: pgsql/src/backend/storage/ipc/procarray.c,v 1.69 2010/05/1311:15:38 sriggs Exp $
40+
* $PostgreSQL: pgsql/src/backend/storage/ipc/procarray.c,v 1.70 2010/05/14 07:11:49 sriggs Exp $
4141
*
4242
*-------------------------------------------------------------------------
4343
*/
@@ -470,11 +470,13 @@ ProcArrayApplyRecoveryInfo(RunningTransactions running)
470470
inti;
471471

472472
Assert(standbyState >=STANDBY_INITIALIZED);
473+
Assert(TransactionIdIsValid(running->nextXid));
474+
Assert(TransactionIdIsValid(running->oldestRunningXid));
475+
Assert(TransactionIdIsNormal(running->latestCompletedXid));
473476

474477
/*
475478
* Remove stale transactions, if any.
476479
*/
477-
Assert(TransactionIdIsValid(running->oldestRunningXid));
478480
ExpireOldKnownAssignedTransactionIds(running->oldestRunningXid);
479481
StandbyReleaseOldLocks(running->oldestRunningXid);
480482

@@ -679,6 +681,9 @@ ProcArrayApplyRecoveryInfo(RunningTransactions running)
679681
if (TransactionIdFollows(nextXid,ShmemVariableCache->nextXid))
680682
ShmemVariableCache->nextXid=nextXid;
681683

684+
Assert(TransactionIdIsNormal(ShmemVariableCache->latestCompletedXid));
685+
Assert(TransactionIdIsValid(ShmemVariableCache->nextXid));
686+
682687
LWLockRelease(ProcArrayLock);
683688

684689
elog(trace_recovery(DEBUG2),"running transaction data initialized");
@@ -1502,6 +1507,10 @@ GetRunningTransactionData(void)
15021507
LWLockRelease(XidGenLock);
15031508
LWLockRelease(ProcArrayLock);
15041509

1510+
Assert(TransactionIdIsValid(CurrentRunningXacts->nextXid));
1511+
Assert(TransactionIdIsValid(CurrentRunningXacts->oldestRunningXid));
1512+
Assert(TransactionIdIsNormal(CurrentRunningXacts->latestCompletedXid));
1513+
15051514
returnCurrentRunningXacts;
15061515
}
15071516

@@ -2317,6 +2326,8 @@ void
23172326
RecordKnownAssignedTransactionIds(TransactionIdxid)
23182327
{
23192328
Assert(standbyState >=STANDBY_INITIALIZED);
2329+
Assert(TransactionIdIsValid(latestObservedXid));
2330+
Assert(TransactionIdIsValid(xid));
23202331

23212332
elog(trace_recovery(DEBUG4),"record known xact %u latestObservedXid %u",
23222333
xid,latestObservedXid);

‎src/backend/storage/ipc/standby.c‎

Lines changed: 9 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,7 @@
1111
* Portions Copyright (c) 1994, Regents of the University of California
1212
*
1313
* IDENTIFICATION
14-
* $PostgreSQL: pgsql/src/backend/storage/ipc/standby.c,v 1.22 2010/05/1311:15:38 sriggs Exp $
14+
* $PostgreSQL: pgsql/src/backend/storage/ipc/standby.c,v 1.23 2010/05/14 07:11:49 sriggs Exp $
1515
*
1616
*-------------------------------------------------------------------------
1717
*/
@@ -717,6 +717,7 @@ standby_redo(XLogRecPtr lsn, XLogRecord *record)
717717
running.xcnt=xlrec->xcnt;
718718
running.subxid_overflow=xlrec->subxid_overflow;
719719
running.nextXid=xlrec->nextXid;
720+
running.latestCompletedXid=xlrec->latestCompletedXid;
720721
running.oldestRunningXid=xlrec->oldestRunningXid;
721722
running.xids=xlrec->xids;
722723

@@ -731,8 +732,9 @@ standby_desc_running_xacts(StringInfo buf, xl_running_xacts *xlrec)
731732
{
732733
inti;
733734

734-
appendStringInfo(buf," nextXid %u oldestRunningXid %u",
735+
appendStringInfo(buf," nextXid %ulatestCompletedXid %uoldestRunningXid %u",
735736
xlrec->nextXid,
737+
xlrec->latestCompletedXid,
736738
xlrec->oldestRunningXid);
737739
if (xlrec->xcnt>0)
738740
{
@@ -880,6 +882,7 @@ LogCurrentRunningXacts(RunningTransactions CurrRunningXacts)
880882
xlrec.subxid_overflow=CurrRunningXacts->subxid_overflow;
881883
xlrec.nextXid=CurrRunningXacts->nextXid;
882884
xlrec.oldestRunningXid=CurrRunningXacts->oldestRunningXid;
885+
xlrec.latestCompletedXid=CurrRunningXacts->latestCompletedXid;
883886

884887
/* Header */
885888
rdata[0].data= (char*) (&xlrec);
@@ -902,19 +905,20 @@ LogCurrentRunningXacts(RunningTransactions CurrRunningXacts)
902905

903906
if (CurrRunningXacts->subxid_overflow)
904907
elog(trace_recovery(DEBUG2),
905-
"snapshot of %u running transactions overflowed (lsn %X/%X oldest xid %u next xid %u)",
908+
"snapshot of %u running transactions overflowed (lsn %X/%X oldest xid %ulatest complete %unext xid %u)",
906909
CurrRunningXacts->xcnt,
907910
recptr.xlogid,recptr.xrecoff,
908911
CurrRunningXacts->oldestRunningXid,
912+
CurrRunningXacts->latestCompletedXid,
909913
CurrRunningXacts->nextXid);
910914
else
911915
elog(trace_recovery(DEBUG2),
912-
"snapshot of %u running transaction ids (lsn %X/%X oldest xid %u next xid %u)",
916+
"snapshot of %u running transaction ids (lsn %X/%X oldest xid %ulatest complete %unext xid %u)",
913917
CurrRunningXacts->xcnt,
914918
recptr.xlogid,recptr.xrecoff,
915919
CurrRunningXacts->oldestRunningXid,
920+
CurrRunningXacts->latestCompletedXid,
916921
CurrRunningXacts->nextXid);
917-
918922
}
919923

920924
/*

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